Types of Coupon Inserts: RP: Red Plum, PG: Proctor and Gamble, SS: Smart Source

Incentives: B1G1: Buy One Get One, RR: Register Rewards (RR are like gift certificates/vouchers. Use RR for your next purchase. Just make sure that it is before the expiration date.)

Stacking: Using a manufacturer and store coupon for an item. (Stacking is only available in some stores. The main-stream stores that allow stacking are: Target and Walgreens.)